TOPten 4Bikes 


 and solar-powered cargo trailers 




Not buffalo-drawn carts with heavy, large wooden wheels have China and


India dragged into modernity, no, carrying the myriad loads of carrying


bicycles (and in part lead to today) this era.  



These patent-free suggestions  TOPten4Bikes  are given especially to bicycle manufacturers and their suppliers.




1.) In the rest lies the power


A classic "upright wheel" challenges us from a grueling, over-curved sitting and working posture; and recumbents position their rider too close to the tarmac.


However, a  e.g. 60° sloping backrest provides a comfortable and optimal supporting posture; With it, active pedaling becomes more powerful, more efficient and you stay relaxed. Leaned sitting conveys an anatomically supportive support with ergonomically optimized pedaling. It also makes cycling in this sitting position safer.


      Advantages of comfortably ajar seating:


* With the center of gravity displaced to the rear, you do not crash headlong over the handlebars in the event of a collision or faulty braking.


* A safety belt adds real protection. The belt is e.g. anchored to the tubular frame of an expanded metal shell backrest.


* A so executed rest protects best in an accident the head area, the shoulders and the hips and makes a helmet obsolete.




2.) Ow, my butt


Especially on longer trips conventional saddles are actually quite uncomfortable.

A saddle can also be formed from two elongated, good seat bidding buttocks, which are mounted side by side on an axle.

These accomplish the bouncing pedaling motion of the driver. Such a "rocker saddle" increases - for ladies as well as for men - the seat comfort - by its noticeable relief in the sensitive crotch area.




3.) Additions to the drive - rocking instead of cranking  


Other inventors tried something similar with all kinds of mechanical detours. These turned out to be rather "stair climbers" and they did not result in any noticeable improvement.   Here, however, pedals and their lever arms remain as usual - only both levers point forward and are operated by rocking instead of circling.                                                                                   


My approach: the left-hand pedal crank is fitted with a freewheel around its square eye. 

effective freewheel. Thus each lever is freewheel-independent (there is already a freewheel in the rear hub).  

Furthermore, the lever arms mounted here pointing forwards have a short piece of steel cable attached to their first third. At the ends of these cables, a sufficiently long intermediate piece in the form of a wheel chain is inserted to connect the lever arms. The wheel chain is guided over a freely rotating sprocket anchored to the seat tube.


This enables a synchronous leg dynamic in which the non-working leg is lifted quasi automatically to be ready to step again. This simple change turns the pedal crank into a lever rocker.

For the purpose of this "leg lifter", the delicate chains used on every gear hub as a connection between the gear cable and the inner pin of the hub are sufficient - according to their lower stress. These chains can therefore also be ordered by the metre. The sprocket that is adapted to the chain should have a ball bearing connection to the seat tube pin. 


The seat tube pin carrying the sprocket can be welded on at a suitable height or fastened by means of its sleeve and a hose rubber nut.

The whole thing is covered by a mudguard; (and all this is maintained as needed, together with the large drive chain, using graphite spray or chain oil).

An optional e-drive would preferably be installed here as a rear hub motor.




* A direct, highly efficient pedal conversion with correspondingly higher speed performance can be achieved via step rocker.


* With the previous cranking, 2/3 empty travel is without propulsion. Here, on the other hand, only the third doing the work is operated.


* Even standing stepping - i.e. using one's own body weight - is possible here with less effort than when pedalling in circles on the crank.


* Short intermittent rocking pauses can be taken at will. The freedom from dead centre allows - similar to before - a free distribution of strength.  


This also inspired me to develop a simple, mechanically uncomplicated ...


         3. a) ... Pedal gear shift


For this purpose, the pedal is screwed to a sliding sleeve which can be moved along the outer 2/3 of the lever arm. 


Lateral, there is a shaft relief coupling between the lever arm and the sliding sleeve. A selected gear is pressed against the clutch relief by a curved leaf spring installed opposite it. This prevents the pedals from shifting unintentionally.


To change gears, the instep of the feet presses outwards sideways; for this purpose, there is a short nose on the outside of the pedals. The leg now freely selects the optimal gear. 

Finding the desired gear ratio is easy to practise and become independent.


         The advantages of this gear system are: 


* It offers the simplest direct selection of the right gear ratio. 


* Especially as a "rocker" it is a fully-fledged gear shift. In combination with the front three chainrings, the relief-shifted five (optionally three) selectable gears unfold an optimally spread overall transmission ratio for both hilly and flat riding.  


* The device has a total weight of only approx. 350 g. It eliminates the need for a number of individual parts - sprocket set, gear lever and cables - as well as the complete derailleur (derailleur) or the entire hub gear.


* It also offers the possibility of replacing a defective freewheel or bottom bracket bearing.


* Retrofit kits (optionally with step rocker) would probably be an instant sales hit, as they fit all 4-sided bottom bracket axles.


Wave of two-piece cranks.

Currently, crank systems have gained acceptance in which the shaft is no longer firmly attached to the bottom bracket, but to the right crank arm. The bearings are screwed to the frame or pressed into it. The shaft is then simply pushed through and bolted to the left crank arm. The advantages of this system are a larger support span and thus longer bearing life and easier disassembly or assembly.




4.)  One fahrRAD - for two-forces     


This tandem/single version has a slightly stretched frame construction on which a second leaning saddle can be placed. Its lever arms are extended beyond the pedalling axle point. There, they can be operated by the second rider, via his or her attachable pedals/slip sleeves, with the same shifting capability. 

For single rides, the second pedals and second saddle are simply left at home. 


This version opens up the development & market proofing of a creative lightweight tandem/single bike! 

The fram-outfit would remain the concrete design result of the respective bicycle manufacturer.


5.) In heat and rain


Who likes to ride a bike in the rain or in high heat? Hardly anyone !


The fact is, our city, cargo and touring bicycles only offer high driving comfort every day if they protect us from wet or direct sunlight. An attachable protective roof would encourage you to leave the car more often in the garage. Maybe some people change to a bike.


A horizontal weather protection roof protects against the sun and rain. On the other hand, as a photovoltaic foil stretched on the aluminum roof frame or as a roller blind, it also supplies a considerable part of the drive energy.

The company offers these lightweight, rollable films.  

The electricity generated on the roof is fed into the solar battery integrated in the bike frame (InTube). The approx. 150 / W PV foil * harvests daylight electricity all day long, even in diffuse weather conditions.


The approximately 1.1 m² roof generates about the energy of a medium-long driving distance.


The lightweight, removable roof is wind-slippery; because even changing winds are actually flat. In a longer test phase, I drove such a problem - even with strong gusts of wind.


For retrofitting such a roof - behind the saddle-backrest or on the handlebars clickable - always a profit.


The four roof corners optionally contain the flashing lights of a turn signal. The lights supplied by the battery should - due to the dangers in today's traffic density - be supplemented by a brake light. The reliable on / off switching of the night lighting should be done by a twilight sensor.


The ~ 60 x 180 cm large roof can be moved about 60 cm forward in the rain and ensures that everything stays dry.


A wind- and visibility-permeable net-store protects against rain as well as from strong lateral sun. If necessary, it is fastened to the roof frame by means of Velcro. The store has a lead band at the lower hem and hangs sufficiently low at about 55 cm. Frame and foil can roll u./od. be constructed foldable.


Sporty cyclists might also like this top hatch without electric drive (covered with Perlon fabric instead of PV foil, it only weighs about 700g) **.



6.) The small cargo


The cargo bike market is diverse, but all cargo bikes are quite expensive to buy and have a bulky-long design.


As an alternative to these, any normal bicycle could accommodate the following cargo basket behind its saddle: 

A clip-on basket measuring about 60x140x55 (w, h, l) cm; in terms of ecological sustainability, this can be made of woven willow. In terms of weight, this natural material is even lighter than e.g. aluminium expanded metal, and could be structured as a wide-open mesh. This dimension would offer 420 litres of secured loading volume. Its floor would be made of 4 mm plywood in beech with an 8 mm double edge reinforcement and would be connected at the corners with four swivel castors. 


The lightweight wicker basket is hooked onto the seat tube and snapped into place on the two seat stays of the rear frame with a gentle tug. The basket is loaded and unloaded via its lockable tailgate. If necessary, a rainproof cover keeps the transported goods dry. 


It could also be used as a practical shopping trolley (in approx. 60x90x50 cm, with 240 l) made of woven willow. 

Taken off the wheel, this type of basket is pushed on its castors like a travel suitcase with a light hand. 


In addition, a 30x30 cm "balcony carrier" attached to the steerer tube (handlebar shaft) can hold further luggage. The luggage is fixed to this carrier with rubber clamps and is placed in the centre of the frame - with any steering angle. If necessary, this carrier provides the statically necessary load compensation for the cargo basket.


This type of lattice basket is also a price competitor to expensive, bulky cargo bikes and helps aspiring deliverers on their way to independence. What's more, if you leave the basket at home, you can use your bike as usual.


Furthermore, several billion plastic suitcases, mostly produced in East Asia, are found in households around the world, and soon after in landfills. They should be replaced by three interlocking, durable travel suitcases made of wicker. These would save us from tens of thousands of tonnes of plastic waste and its decomposition into microplastics; and above all, end the perpetually polluting, malodorous plastic suitcase trade. It would also revive an ancient craft.

A leather strap is wrapped along the hinges of the half-shells, and a folding handle is attached above for pushing.

With a pleasant interior fabric and colourful oilcloth weather cover, this wicker trolley would be another sustainable useful article in a necessarily increasingly ecological lifestyle. 


This suggestion, too, goes out licence-free to those willing to start up. 

Self-made sets including instructions could also be ordered as raw material. In this way, one could make one's own clip-on basket. Can't be too difficult - can it? 




       6.a) fahrRad or e-bike with a heavy-duty trailer


This is a low loader trailer which is steered via the bike or fahrRAD. It provides CO²-free delivery services, possibly also taxi services, and is especially designed for today's climate.


This 2.9 m long trailer travels on a 125 cm wide track and weighs approx. 115 kg, witha load of 800 kg.


Right behind the drawbar, which can be raised, two 35 cm large twin wheels – with their turntable base to the load space – take some load off the bike - fahrRAD.


The freight weight is distributed over eight wheels including two 60 cm twin rear wheels.


Four synchronous recuperation hub drives take over the idle as well as the load operation. Their performance would be limited to a max. designed to move a load of 900 kg. The energy recovered from the movement is optimally kept in high-performance storage capacitor banks for subsequent start-up - that are still to be developed (possibly with Zehus).


The e-motors should have a 3 km / h slow return gear and a 5 km / h first gear for solo tiller hand guidance.

The four recuperation-synchronous rim brakes allow driving at 25 km / h at full load and up to 45 km / h at idle or part load.


Instead of a rear-view mirror, the trailer has a rear camera; this shows the driver what is going on behind.


The extra deep and 3.6 m² large loading area consists of 16 mm plywood. The spring suspension takes place via 10 compression springs that connect the frame to the loading area.  


With a track width of 125 cm, the 170 cm high body withstands lateral wind. The side tarpaulins remain rolled up in strong winds and low freight weight. The structure  offers space for 3 pallets of goods on a 6 m³ loading space.


The trailer is bridged in a U shape with the 1.7 m high roof frame made of large-mesh welded mesh. Everything is covered with a solar fabric film (e.g. made by manufacturers Alwitra, Flisom or Heliotek). The cargo is also protected from the side by tarpaulins. They are opened or closed by means of special e-roller blinds and at the same time they pull the zip fastener on the sides. In addition, the load is secured with tension belts. This covering provides sufficient energy via its 12 m² photovoltaic surface - even when it is cloudy.


Batteries are accommodated in the chassis of the trailer for long transport routes; they are inserted into their own subjects there. These batteries provide sufficient travel reserves and are recharged with a cable.


      6.b) The trailer can also be converted into a family carriage or comfortable camping tent::


The carriage (or the taxi) has up to 4 plug-in seats for passengers - 2 to 3 people each. They are made of felt-covered, light plywood seats on a metal frame. With three rows of seats, the trailer still has space for 1 or 2 pushchairs. You can enter from both sides; there is a 1 x 0.6 m window on the front and rear; The PV tarpaulins on the side also provide an all-round view for a maximum of 12 people during a journey thanks to integrated windows made of film.

On cold days, gentle quartz heaters provide warmth for the passengers.


The attachable side folding walls made of light multi-wall sheets result in a 12.4 m² living / sleeping level for when in tent mode. When the walls are opened, the tent opens, with four arching clips opening at the same time. Then adjust the four corner supports - done!


Now everywhere is a nice camping lot or a free parking space! With its own electricity, solar ink and of course with an organic composting toilet, the wide world can now be traveled even on a budget.  


Every e-bike can be coupled up to this trailer. Either as a trailer, or as a carriage for the whole family or for 

urban or rural delivery services and taxis - this "packhorse" facilitates emission-free transport services based on 

independent companies.




7.) Airless tire?


What the low-section tyre does for a car, the following profile-carcass section could do for a bicycle: 


My idea of a new type of tires made of harder rubber compound requires neither the usual rim bead wire nor fabric inserts, neither a hose nor internal air overpressure. These types of tires already spring through their thick-walled hard rubber cross-section profile (see drawing). In the case of higher loads, these tires can still inflate accordingly. The extra-deep loading area and large disc brakes allow a top speed of 25 km/ h.